Definitely had buyer’s remorse with my current vehicle, a Ford Galaxy.
Had a list of problems, from seven software crashes, an engine that cuts out whenever the Adblue level drops below halfway, windscreen wipers that come on on dry days if you put the aircon on high, an oil leak that has been looked at (and supposedly cured) four times and two manufacturer recalls. It also has a really annoying habit of activating collision assist braking whenever a car passes too close in the opposite direction.
My Ford dealer service manager tells me that they just get one like this now and then. That doesn’t help and I will be really happy to see it go once another suitable car comes onto the scheme.